@jamesh @elaterite @hugh do you have a source for that? I'm used to a teaspoon being 5 mL and a tablespoon being 15 mL, though calling things "metric tablespoon" itself seems a bit offside
@keverets @elaterite @hugh volume measurements can be useful if you're only using a small amount.
If your kitchen scales claim accuracy to 1 gram and you're only trying to measure out a couple of grams, then the error margin could be quite significant. If you don't have a second set of high precision scales, then the measuring spoons might be more accurate.
@jamesh @elaterite @hugh additionally, measuring ingredients by volume when they could be measured by mass is unfortunate. So much easier and cleaner to throw a bowl on a scale and re-tare every ingredient